Home / 30,721.52-42,395.71-17,977.16

Finding the Fourth Proportional to 30,721.52, 42,395.71 and 17,977.16

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Solution

The fourth proportional to 30,721.52, 42,395.71 and 17,977.16 is: 24,808.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,721.52 : 42,395.71 = 17,977.16 : x
  2. Step 2: Convert to fraction form
    30,721.52/42,395.71 = 17,977.16/x
  3. Step 3: Cross multiply
    30,721.52x = 42,395.71 × 17,977.16
  4. Step 4: Simplify right side
    30,721.52x = 762,154,318.26
  5. Step 5: Solve for x
    x = 762,154,318.26/30,721.52
  6. Step 6: Final answer
    x = 24,808.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.